I continually am getting error code 81000306 when attempting to sign in to windows live messenger. I have tried all available steps, including a registry cleaner, a re-install of the messenger etc. Disabling the autotuning in run as administrator . I can't think what else to try. i have a fairly new windows vista laptop.

That error code has to do with firewall issues. Try updating the router's firmware at the manufactures website>downloads and drivers or support.

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First uninstall the one you have
then do a windows update on your pc
you should be able to download an update for messenger after that.
If you still can't then open add and remove programs
then windows programs scroll down and make sure there is no check mark in windows messenger
if there is then take it out once done restart pc then download windows live messenger again

Error: 81000306
1.
Make sure that you are connected to the Internet. Start Microsoft
Internet Explorer, and then try to visit the following Web sites: Messenger service statusMicrosoft web site
If you cannot visit these sites, contact your Internet service
provider (ISP) for information about how to set up your Internet
connection so that you can visit both secure (https) and non-secure
(http) sites.
2. If you are able to visit the Messenger service
status page and notice that there is a service issue, please visit the
site later to determine when the service is available so that you can
sign into Messenger. If the site indicates that the all systems are
stable and running, go to the next step. 3. Clear the proxy settings in MSN Messenger.
3.a. Start Messenger. 3.b. On the Tools menu, click Options. 3.c. Click Connection in the left navigation pane. 3.d. Click Advanced Settings in the Connection Settings section. 3.e. Delete the content of the SOCKS field. 3.f. Click OK two times to save the settings. 3.g.
After you clear the proxy settings, verify if you are able to sign into
Messenger. If you are still not able to sign into Messenger then please
go to the next step. 4. If you are using Windows Vista, disable the Auto Tuning Networking feature:
4.a. Click Start, click All Programs, click Accessories, and then right-click Command Prompt and choose Run as administrator. 4.b. Click Continue when Windows requests permission to continue. 4.c. At
the command prompt, type the following command, and then press ENTER:
netsh interface tcp set global autotuninglevel=disabled Note: This command disables the Window Auto Tuning feature.
4.d. After you disable the Auto Tuning Networking feature, verify if you are able to sign into Messenger.
5. If you are still not able to sign into
Messenger then please re-enable this feature using the information
below and then go to the next step.
5.a. Re-enable the Auto Tuning Networking feature by typing the following command at the command prompt, and then pressing ENTER:
netsh interface tcp set global autotuninglevel=normal
Note: This command enables Window Auto Tuning
again so that you can take advantage of the network throughput
performance increase it provides. 6. If you are using Windows Vista and you also
use a router (eg. Linksys, D-Link, Netgear) on your home network to
connect to the internet please visit the router manufacturer’s website
to update to the latest firmware for that product.
RICHARDM69

To reset your password by providing location information and the answer to your secret question:

On any Windows Live ID site or service sign-in page, click Forgot your password.

Enter your Windows Live ID
(The e-mail address and password that you use to sign in to Windows
Live programs and services such as Windows Live Hotmail and Windows
Live Messenger; Microsoft services such as Xbox, MSN, and Office Live;
and anywhere else that you see the Windows Live ID logo.) , type the characters you see in the Picture box, and then click Continue.

In the Country/Region list, select the name of your country or region , select your state, and then type your ZIP code
( The postal code system that is used in the United States. The ZIP
code consists of a series of digits that are added to a postal address.
The ZIP code is used to identify each postal delivery area for the
purpose of sorting mail.) or postal code
( A series of letters and/or digits that are added to a postal address
and used by the postal service for the purpose of sorting mail.) if you’re prompted to do so. In the Question area in the Secret Answer box, type your answer to the question.

Click Continue.

Enter and confirm a new password, and then click Continue.

If prompted, enter an alternate e-mail address
(An alternate e-mail address is a secondary e-mail address registered
with your Windows Live ID credentials. In the event that you forget
your password, you can request to have the password reset information
sent to your alternate e-mail address.) and click Continue, or click Skip to bypass this step.

On the You've changed your password page, click Sign in to Windows Live.

Error: 80048821
If you are encountering the error 80048821 when you sign into Messenger try the following:
1. Visit http://account.live.com .
2. Click Sign in with a different account.
3. Enter the Windows Live ID that you use with Messenger and the correct password.
4. Click Sign in to verify that you can successfully sign in by using this account.
5. If you are unsuccessful, try to reset the password. To do this, follow these steps:
5.a. Visit http://account.live.com . 5.b. Click Sign in with a different account. 5.c. Enter the ID, and then click Forgot your password. 5.d. Follow the steps in the wizard to reset your password. 5.e. If you need help resetting your password because you cannot remember your secret question and answer or alternate e-mail address, contact Windows Live ID support. To do this, visit the following Web site, and then select Windows Live ID: http://support.live.com5.f. After you successfully reset your password, go to the next step to update the settings.

6. If you are successfully signed in by using your account, remove the saved credentials, and then reenter the updated credentials. To do this, follow these steps:
6.a. In the Messenger sign-in window, select your e-mail address from the E-mail address drop-down list. If you do not see your ID on the list, go to step c. 6.b. Click Forget Me, and then click Yes to confirm the deletion. 6.c. Type your e-mail address and your password. 6.d. Select the Remember Me and Remember my password check boxes to save your sign-in information, and then click Sign in.

That means Windows Live Messenger is unable to contact the authentication server.

Open up Live Messenger and go to Tools and go to Options. Under Connection Settings, choose Advanced Settings. Make sure there are nothing in the proxy fields. Make sure the SOCKS area has nothing in it and click okay until you get back to the Messenger window and try to sign in.

If that doesn't work and you are running Windows Vista, click start, type: cmd, right-click cmd.exe when it appears under Applications, click Run As Administrator, type the following: "netsh int tcp set global autotuninglevel=disabled", rress enter, restart your computer”

Windows Live Messenger error code 81000306
Problem description
When you start Windows Live Messenger you cannot sign in, and you get error code 81000306 along with the message:
We were unable to sign you in to Windows Live
Messenger, possibly because of a problem with the service or with your
Internet connection. Please make sure that you are connected to the
internet.

Error: 8100030d
If you are receving the error code 8100030d when signing into Messenger, do the following:
1. Determine what version of Messenger is installed on the computer, and then upgrade Messenger if it is required:
1.a. Click here to
determine the most recent versions of Messenger for each operating
system. If you are not running the latest version for your operating
system, please install the most updated version.
2. Delete the cache files for Messenger. Follow the steps below based on which version of Messenger you are using:
2.a.For MSN Messenger:2.a.i. If you are running Windows XP or Windows 2000 click Start, click Run, type cmd , and then click OK to open the command window.
2.a.ii. If you are running Windows 98 or Windows ME, click Start, click Run, type command , and then click OK.
2.a.iii. At the command prompt, type the following commands. After each command line, press ENTER: cd\ cd %appdata%\microsoft cd "msn messenger" del /s listcache.dat
2.b.For Windows Live Messenger:2.b.i.For Windows XP

Right click on the Start button and then click Explore to open
Windows Explorer. On the Tools menu, click Folder Options. Click the
View tab. In the Advanced settings list, select Show hidden files and
folders under Hidden Files and Folders. Click to clear the Hide
extensions for known file types check box . Click OK to close the
Folder Options window.

Delete the Contacts Cache folder. To do so, right-click
Start, and then click Explore to open the Windows Explorer window. In
the Windows Explorer window, locate the folders below and delete all
the files and folders inside them

C:\Documents and Settings\ Your Windows logon name \Contacts\ Your Messenger e-mail address C:\Documents
and Settings\ Your Windows logon name \Local Settings\Application
Data\Microsoft\Windows Live Contacts\ Your Messenger email address
Note: Windows Logon name is the logon name that
you use to sign in to windows. Your Messenger email address is the
address that you use to sign in to Messenger. 2.b.ii.For Windows Vista

Click Start and then click Explore to open Windows Explorer. On
the Organize menu, click Folder and Search Options. Click the View
tab. In the Advanced settings list, select Show hidden files and
folders under Hidden Files and Folders. Clear the Hide extensions for
known file types check box. Click OK to close the Folder Options
window.

Delete the Contacts Cache folder. To do so, right-click
Start, and then click Explore to open the Windows Explorer window. In
the Windows Explorer window, locate the folders below and delete all
the files and folders inside them.

C:\Users\ Your Windows logon name \Contacts\ Your Messenger e-mail address C:\Users\ Your Windows logon name \AppData\Local\Microsoft\Windows Live Contacts\ Your Messenger e-mail address
Note: Windows Logon name is the logon name that
you use to sign in to windows. Your Messenger email address is the
address that you use to sign in to Messenger.

Occasionally, you may have to change or reset the password for your Windows Live ID to sign in to Zune.net or to access your Zune account.

To change or reset the password for your Windows Live ID, follow these steps:
1.
Visit the following Web page, and then click Forgot Your Password?:
http://login.live.com (http://login.live.com)
2.
Type your Windows Live ID, type the characters that appear in the Picture box, and then click Continue.
3.
Click Send yourself a password reset e-mail message.
4.
Click Send Message.
5.
On the confirmation page, click Done.
6.
Sign in to your e-mail account, and then click the link in the e-mail message to reset your password.
7.
On the Confirm your e-mail address page, type your e-mail address, and then click Continue.
8.
Type your new password two times, and then click Continue.
9.
If you want to enter an "alternate" e-mail address, type the address two times, and then click Continue.

If you do not want to enter an "alternate" e-mail address, click Skip.
10.
When you receive the "You've changed your password" message, click Done.For more information about Windows Live ID services, visit the following Windows Live ID Web site:
http://get.live.com/getlive/overview